public static void Area()
{
EquilateralTriangle triangle = new EquilateralTriangle(8);
double area = triangle.Area();
Assert.AreEqual(27.71281292, area, Tolerance);
}
public static void Main()
{
double r = 4.0;
Geometry a = new Geometry(r);
Geometry c = new Circle(r);
Geometry s = new Sphere(r);
Geometry et = new EquilateralTriangle(r);
Console.WriteLine("r={0}，相应地", r);
Console.WriteLine("正方形的面积为:{0}", a.Area());
Console.WriteLine("圆的面积为:{0}", c.Area());
Console.WriteLine("球体的表面积为:{0}", s.Area());
Console.WriteLine("等边三角形的面积为:{0}", et.Area());
}
public void EquilateralTriangleTest()
{
EquilateralTriangle triangle = new EquilateralTriangle();
triangle.SideLength = 10;
double areaExpected = 43.30;
double area = Math.Round(triangle.Area(), 2);
Assert.Equal(areaExpected, area);
double perimeterExpected = 30;
double perimeter = triangle.Perimeter();
Assert.Equal(perimeterExpected, perimeter);
}
